The　use　of　Fischer-Speier　esterification　reaction　produced　biodiesel　as　a　substitute　for　fossil　fuels　has　potential　to　alleviate　the　climate　and　energy　crisis.　However,　catalysts　for　the　esterification,　such　as　H2SO4,　ionic　liquids　etc.,　pose　environmental　concerns　due　to　their　difficulty　in　reuse,　complex　synthesis　process　or　the　requirement　of　strong　acid　treatment.　Herein,　we　try　to　avoid　using　common　acidification　treatments　and　exploit　p-phenylenediamine　and　1,　3-propanesultone　under　the　intensification　of　hydrogen　bonding　donor　(HBD)　of　ethanol　to　acquire　novel　chemicals　of　[N,N-di(propanesulfonic)　phenylenediamine][ethanol]2　in　one　step　for　the　first　time.　This　route　triggers　hydrogen　bond　interaction　in　the　produced　networks　to　enable　both　stable　self-solidification　and　effective　esterification　catalysis,　achieving　remarkable　96.3%　of　esterification　conversion　that　could　even　suppress　homogenous　catalysts　under　very　mild　conditions,　but　with　easy　separation　feature.　This　synthetic　method　holds　great　promise　for　the　synthesis　of　value-added　chemicals　in　a　more　environmentally　friendly　manner.　©　2023　Elsevier　B.V.